cam problem help
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
cam problem help
i think i wiped out a cam lobe in my car and its a texas speed t2 112 cam and i liked the lope and good hp with it but it seemed a lil low on the torque end so im looking for a cam that is somewhere in the same specs as the t2 cam that produces more torque. any good cams that produce more torque around the specs of this cam? the specs on the t2 cam i have now is 232/234 595 598 112 
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
i think i wiped out a cam lobe in my car and its a texas speed t2 112 cam and i liked the lope and good hp with it but it seemed a lil low on the torque end so im looking for a cam that is somewhere in the same specs as the t2 cam that produces more torque. any good cams that produce more torque around the specs of this cam? the specs on the t2 cam i have now is 232/234 595 598 112
Cams around the same specs will produce close to the same numbers. a little +/- and little up or down on the curve
Comp cams
228/232 585/595 110
224/230 581/588 114
230/230 580/580 112
232/234 595/598 112 XER281HR
Burning Brakes
Joined: Apr 2009
Posts: 946
Likes: 2
If you want more torque you need to go to a smaller duration (to shift the power down in the power band), tighter LSA, or advance the cam (either by getting more advance ground in or by cam timing). Each will have it's trade offs.
Smaller duration means less total power, less chop at idle (probably). The trade off is that you will make better low and midrange torque but will see lower peak numbers.
Tighter LSA means a narrower power band, higher cylinder pressures, decreased ptv, rougher idle, increased overlap, increased cranking compression (and dynamic compression). The trade off is that you move the torque band lower in the rpm range.
More advance means decreased ptv on the intake (but increased ptv on the exhaust). The trade off is that you build more low end torque at the expense of high end torque.
Smaller duration means less total power, less chop at idle (probably). The trade off is that you will make better low and midrange torque but will see lower peak numbers.
Tighter LSA means a narrower power band, higher cylinder pressures, decreased ptv, rougher idle, increased overlap, increased cranking compression (and dynamic compression). The trade off is that you move the torque band lower in the rpm range.
More advance means decreased ptv on the intake (but increased ptv on the exhaust). The trade off is that you build more low end torque at the expense of high end torque.
Burning Brakes
Joined: Apr 2009
Posts: 946
Likes: 2
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Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Drifting
Joined: May 2005
Posts: 1,590
Likes: 1
From: Littleton Colorado
How the heck would you damage a cam? Isn't that one of the strongest pieces in a valve train? I'd be thinking push rod or valve being bent or a spring break long before I'd suspect a cam issue. But, what do I know, I'm no expert.
It looks like you have the stock gear ratio, I'd be looking at gears before I'd look at a different cam. Unless there is something wrong with your cam or its not very suited to your application. Even then I'd be looking at gears, it looks like your into drag racing and if so the 4.10's may be good for you. Again, I'm no expert and I don't drag race, but maybe something to think about.
It looks like you have the stock gear ratio, I'd be looking at gears before I'd look at a different cam. Unless there is something wrong with your cam or its not very suited to your application. Even then I'd be looking at gears, it looks like your into drag racing and if so the 4.10's may be good for you. Again, I'm no expert and I don't drag race, but maybe something to think about.
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
How the heck would you damage a cam? Isn't that one of the strongest pieces in a valve train? I'd be thinking push rod or valve being bent or a spring break long before I'd suspect a cam issue. But, what do I know, I'm no expert.
It looks like you have the stock gear ratio, I'd be looking at gears before I'd look at a different cam. Unless there is something wrong with your cam or its not very suited to your application. Even then I'd be looking at gears, it looks like your into drag racing and if so the 4.10's may be good for you. Again, I'm no expert and I don't drag race, but maybe something to think about.
It looks like you have the stock gear ratio, I'd be looking at gears before I'd look at a different cam. Unless there is something wrong with your cam or its not very suited to your application. Even then I'd be looking at gears, it looks like your into drag racing and if so the 4.10's may be good for you. Again, I'm no expert and I don't drag race, but maybe something to think about.
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
I doubt the cam lobe being wiped. Did you or someone else have a miss shift and over rev the engine? That could have caused the valves to float and allow the piston contact. Chances are that other cylinders have valves that contacted as well. Make sure to check all of them.
On the LSx engines the only times I've seen cam lobes damaged is if the lifter gets 90 degs to the path of normal rotation, caused by broken lifter tray, or miss heat treated cam lobes. If this happened, you will have metal in the oil and a slight chance of main and connecting rod bearing damage from the metal.
Hope the best for ya!
On the LSx engines the only times I've seen cam lobes damaged is if the lifter gets 90 degs to the path of normal rotation, caused by broken lifter tray, or miss heat treated cam lobes. If this happened, you will have metal in the oil and a slight chance of main and connecting rod bearing damage from the metal.
Hope the best for ya!
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
I doubt the cam lobe being wiped. Did you or someone else have a miss shift and over rev the engine? That could have caused the valves to float and allow the piston contact. Chances are that other cylinders have valves that contacted as well. Make sure to check all of them.
On the LSx engines the only times I've seen cam lobes damaged is if the lifter gets 90 degs to the path of normal rotation, caused by broken lifter tray, or miss heat treated cam lobes. If this happened, you will have metal in the oil and a slight chance of main and connecting rod bearing damage from the metal.
Hope the best for ya!
On the LSx engines the only times I've seen cam lobes damaged is if the lifter gets 90 degs to the path of normal rotation, caused by broken lifter tray, or miss heat treated cam lobes. If this happened, you will have metal in the oil and a slight chance of main and connecting rod bearing damage from the metal.
Hope the best for ya!
Pro
Joined: May 2006
Posts: 723
Likes: 0
From: MOTOWN / Fort Dix NJ MI
sounds like they didn't check the clearances when they did your install... thats pretty important... cost 300-400 to notche your pistons vs doing a total teardown and fixing broken valve train parts
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
well i found out what happened to the motor. the roller came off the bottom of the lifter and messed up the cam and unfortunately the block as the lifter got spread and jammed in the block and ruined the block.
